Deep-well drill.



PATENTED JULY 21, 1908.

' w. HUTGHINGS. DEEP WELL DRILL. APPLICATION FILED JULY 9. 1906.

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Wit" ea PATENTED JULY 21, 1908.

W. HUTCHINGS. DEEP WELL DRILL. APPLICATION FILED JULY 9. 1906.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

WILLIAM HUICHINGS, OF ISHPEMING, MICHIGAN.

DEEP-WELL DRILL.

Specification of Letters Patent.

Patented July 21, 1908.

Application med July 9, 1906. Serial No. 825,868.

ts object is'to provide for readily and ef fectively withdrawing or lifting the resulting core, and to accomplish the same in a simple, advantageous and expeditious manner.

Said invention consists of certain struc tural features or instrumentalit'ies substantially as hereinafter fully disclosed and particularly pointed out by the claims.

In the accompanying drawing illustrating the preferred embodiment of my invention-.-

Figure 1 is a side elevation of a drill of the character herein referred to, with arts broken away. Fi 2 is a sectional e evation, parts also be ngbroken away. Fig. 3 is a horizontal or transverse section of the contrivance. Fig. 4 is a detached perspec tive view of the core grappling or gripping device. Fig. 5 is a transverse section 0 the same, produced through the main springmetal band for the retention of the sections of the core-grappling device in yielding relation one to the other. Fi 6 is a vertical sectional view of the core er; Fig. 7 is a top plan view of the core lifter in the position when'gri ping the core, and Fig. 8 is a view in side e evation of the core lifter showing the sections in the position when gripping the core.

In carrying out my invention, I employ the shell or tube 1 having produced u on its inner surface near or at the lower en inte'rnalscrew-threads 2 for the application or attachment thereto of the usual mineral or by 8 screw-thread end rock boring bit, which, however, need not be referred to further herein, not forming any part of the claimed invention. Said shell or an internal beveled surface or shoulder 5,

at its center about, b

-w1re is also let into a 11 'formed in the sections of the core-lifter with its base offset or terminating at a point just above the lower screw-threaded surface 2 and flared or diverging upward.

- A grappling or gri ping contrivance 6, which may be terme the core-lifter, is adapted to be introduced and supported within the shell 1, upon the shoulder 5, for receiving arid engaging the forming core during the drilling orboring operation. Said core-lifter, tubular or cylindric in its general outline, is composed generally of a number of sections or members -7, say three equipped with engaging pins and sockets'8, along their meeting edges, and encompassed a split spring-metal clasp or band 10, let into a correspondingly shaped shallow recess or groove 11 produced in said clasp-sections, which clasp is also effective to permit of the expansion and contraction of saidcore-lifter according to conditions as presently made known, A supplemental split clasp 12 of spring-metal e-shape groove 13 6, near the upper edge of the latter. Said core-lifter, sections 7 are chamfered or beveled at their lower ends or ed es, both upon the inner and outer surfaces t ereof as at 14, 15,-and have their lower ends reduced or tapered as at 18, 18 whereby the adjacent edges are capable of rockin upon each other. To provide for the rea y entrance of the forming core into the core-lifter, and for the ready seating of the latter into the beveled or u ward flared shoulder 5 upon the interior of t 'e shell or tube 1, respectively, this latter takin place, of course, when the drill is lifted or e evated', as more fully made apparent later. The reduced ends 18 of the sections permit them to rock upon each other as the core is forced up into the sections, and the tube 1 is then drawn upward causing the sections to be drawn down upon the flared shoulder 5 and causing the sections to gri erably V-shaped in cross-section, and w 'ch serve to aid the core-lifter in effectively gripping the core.

In operation, the core-lifter will, as the forming core initially enters the shell 1 and passes above the shoulder 5, rise sufficiently from its'seat in the latter, to allow the core to re uisitely spread the sections of said core lifter for its entrance thereinto, the screw-threaded connection between thedrill rod and said shell limiting the u ward displacement of said-coredifterf, us allowmg the forming core to readily rise or pass upward through the latter during-the boring operation. Upon the conclusion of sai operation and as the shell and all are lifted 1. A Well drill comprising a tube member adapted to be connected to the drill ordrill rod, said tube member being constricted at one end forming a beveled surface, an adjustable core lifter made in sections received in the tube member, and the sections havin" the lower meeting edges or faces tapered whereby the adjacent edges are capable of rocking u on each other.

2. A We 1 drill, comprising a tube member; adapted to be connected to the drill and drill .name to-this specification in the one end forming a beveled surface, an adjustable core lifter made in sections received in the tube member, pin and socket connections for connecting the sections together, and having diagonal grooves in the inner surface of the sections ada ted to engage the core.

' 3. A well drill comprising a tube member adapted to be connected to the drill and drill rod, said tube member being constricted at one end forining a beveled surface, an adjustable core lifter made in sections received in the tube n ember, pin and socket connections for connecting the sections together, said sections having the lower meeting edges or faces taperd forming rocking surfaces at the adjace t edges, and havlng diagonal grooves in the inner surface of the sections.

4. A well drill comprising a tube member ada ted to be connected to the drill and drill rod, said tube member being constricted at one end forming a beveled surface, an adjustable core lifter made in sectionsrre- .ceived in .the tube member, said sections havin the lower meeting edges tapered where y the adjacent edges are capable of rocking upon each other, and diagonal grooves in the inner surface whereb a greater gripping action can be obtaine on the core.

In testimony whereof I have signed my presence of two subscribin witnesses.

, WILLIAM HUTCHINGS. Witnesses:

W. O. MCWHIRTER, J: C. McGlLvEmr. 

